Droop improvement in high current range on PSS-LEDs Tanaka, S. ; Zhao, Y. ; Koslow, I. ; Pan, C. -C. ; Chen, H. -T. ; Sonoda, J. ; DenBaars, S. P. ; Nakamura, S. Abstract Publication: Electronics Letters Pub Date: 2011 DOI: 10.1049/el.2010.3306 Bibcode: 2011ElL....47..335T